<!--********************************************************************
* Copyright© 2000 - 2025 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!--********************************************************************
* 该示例需要引入 
* Mapv (https://github.com/huiyan-fe/mapv)
*********************************************************************-->
<!DOCTYPE html>
<html lang="en-US">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width" />

    <title data-i18n="resources.title_mapvQianxi"></title>
    <style>
      body {
        margin: 0;
        padding: 0;
      }

      #map {
        position: absolute;
        top: 0;
        bottom: 0;
        width: 100%;
      }
      .maplibregl-popup-close-button {
        outline: none;
      }
    </style>
    <script type="text/javascript" include="jquery" src="../js/include-web.js"></script>
    <script type="text/javascript" include="mapv" src="../../dist/maplibregl/include-maplibregl.js"></script>
  </head>
  <body style="margin: 0; overflow: hidden; background: #fff; width: 100%; height: 100%">
    <div id="map"></div>
    <script type="text/javascript">
      var attribution =
        "<a href='https://www.maplibre.com/about/maps/' target='_blank'>© MapLibre </a>" +
        " with <span>© <a href='https://iclient.supermap.io' target='_blank'>SuperMap iClient</a> | </span>" +
        " Map Data <span>© <a href='http://support.supermap.com.cn/product/iServer.aspx' target='_blank'>SuperMap iServer</a> | </span>" +
        "<a href='https://mapv.baidu.com' target='_blank'>© 2018 百度 MapV</a>";
      var host = window.isLocal ? window.server : 'https://iserver.supermap.io';
      var tileURL = host + '/iserver/services/map-china/rest/maps/ChinaDark/zxyTileImage.png?z={z}&x={x}&y={y}';
      var map = new maplibregl.Map({
        container: 'map',
        style: {
          version: 8,
          sources: {
            'raster-tiles': {
              attribution: attribution,
              type: 'raster',
              tiles: [tileURL],
              tileSize: 256
            }
          },
          layers: [
            {
              id: 'simple-tiles',
              type: 'raster',
              source: 'raster-tiles',
              minzoom: 0,
              maxzoom: 22
            }
          ]
        },
        center: [112, 37.94],
        zoom: 4
      });
      map.addControl(new maplibregl.NavigationControl(), 'top-left');
      map.addControl(new maplibregl.supermap.LogoControl({ link: 'https://iclient.supermap.io' }), 'bottom-right');
      map.setPitch(60);
      new maplibregl.Popup({ closeOnClick: false })
        .setLngLat(map.getCenter())
        .setHTML(resources.text_iClient)
        .addTo(map);

      map.on('load', function () {
        $.get('../data/china.json', function (geojson) {
          var geojsonOptions = {
            gradient: {
              0: 'rgba(55, 50, 250, 0.4)',
              1: 'rgba(55, 50, 250, 1)'
            },
            max: 354551,
            draw: 'intensity'
          };

          var geojsonDataSet = mapv.geojson.getDataSet(geojson);

          var to = '北京';

          var qianxi = new mapv.DataSet([
            {
              from: '河北',
              count: 354551,
              to: to
            },
            {
              from: '天津',
              count: 97323,
              to: to
            },
            {
              from: '山东',
              count: 28664,
              to: to
            },
            {
              from: '山西',
              count: 16650,
              to: to
            },
            {
              from: '辽宁',
              count: 14379,
              to: to
            },
            {
              from: '河南',
              count: 10980,
              to: to
            },
            {
              from: '内蒙古自治区',
              count: 9603,
              to: to
            },
            {
              from: '江苏',
              count: 4536,
              to: to
            },
            {
              from: '上海',
              count: 3556,
              to: to
            },
            {
              from: '广东',
              count: 2600,
              to: to
            }
          ]);

          var qianxiData = qianxi.get();

          var lineData = [];
          var pointData = [];
          var textData = [];
          var timeData = [];

          var citys = {};

          for (var i = 0; i < qianxiData.length; i++) {
            var fromCenter = mapv.utilCityCenter.getCenterByCityName(qianxiData[i].from);
            var toCenter = mapv.utilCityCenter.getCenterByCityName(qianxiData[i].to);
            if (!fromCenter || !toCenter) {
              continue;
            }
            citys[qianxiData[i].from] = qianxiData[i].count;
            citys[qianxiData[i].to] = 100;
            pointData.push({
              geometry: {
                type: 'Point',
                coordinates: [fromCenter.lng, fromCenter.lat]
              }
            });
            pointData.push({
              geometry: {
                type: 'Point',
                coordinates: [toCenter.lng, toCenter.lat]
              }
            });
            textData.push({
              geometry: {
                type: 'Point',
                coordinates: [fromCenter.lng, fromCenter.lat]
              },
              text: qianxiData[i].from
            });
            textData.push({
              geometry: {
                type: 'Point',
                coordinates: [toCenter.lng, toCenter.lat]
              },
              text: qianxiData[i].to
            });

            var curve = mapv.utilCurve.getPoints([fromCenter, toCenter]);

            for (j = 0; j < curve.length; j++) {
              timeData.push({
                geometry: {
                  type: 'Point',
                  coordinates: curve[j]
                },
                count: 1,
                time: j
              });
            }

            lineData.push({
              geometry: {
                type: 'LineString',
                coordinates: curve
                //coordinates: [[fromCenter.lng, fromCenter.lat], [toCenter.lng, toCenter.lat]]
              },
              count: 30 * Math.random()
            });
          }

          var data = geojsonDataSet.get({
            filter: function (item) {
              if (!citys[item.name]) {
                return false;
              }

              item.count = citys[item.name];
              return true;
            }
          });
          geojsonDataSet = new mapv.DataSet(data);

          var mapVlayer = new maplibregl.supermap.MapvLayer(geojsonDataSet, geojsonOptions);
          map.addLayer(mapVlayer);

          var textDataSet = new mapv.DataSet(textData);

          var textOptions = {
            draw: 'text',
            font: '14px Arial',
            fillStyle: 'white',
            shadowColor: 'yellow',
            shadowBlue: 10,
            zIndex: 11,
            shadowBlur: 10
          };
          var textLayer = new maplibregl.supermap.MapvLayer(textDataSet, textOptions);
          map.addLayer(textLayer);

          var lineDataSet = new mapv.DataSet(lineData);

          var lineOptions = {
            strokeStyle: 'rgba(255, 250, 50, 0.8)',
            shadowColor: 'rgba(255, 250, 50, 1)',
            shadowBlur: 20,
            lineWidth: 2,
            zIndex: 100,
            draw: 'simple'
          };
          var lineLayer = new maplibregl.supermap.MapvLayer(lineDataSet, lineOptions);
          map.addLayer(lineLayer);

          var pointOptions = {
            fillStyle: 'rgba(254,175,3,0.7)',
            shadowColor: 'rgba(55, 50, 250, 0.5)',
            shadowBlur: 10,
            size: 5,
            zIndex: 10,
            draw: 'simple'
          };

          var pointDataSet = new mapv.DataSet(pointData);

          var pointLayer = new maplibregl.supermap.MapvLayer(pointDataSet, pointOptions);
          map.addLayer(pointLayer);

          var timeDataSet = new mapv.DataSet(timeData);

          var timeOptions = {
            fillStyle: 'rgba(255, 250, 250, 0.5)',
            zIndex: 200,
            size: 2.5,
            animation: {
              type: 'time',
              stepsRange: {
                start: 0,
                end: 50
              },
              trails: 10,
              duration: 2
            },
            draw: 'simple'
          };
          var timeLayer = new maplibregl.supermap.MapvLayer(timeDataSet, timeOptions);
          map.addLayer(timeLayer);
        });
      });
    </script>
  </body>
</html>
